EP 1035797 A2 20000920 - NON-PROGRAMMABLE AUTOMATED HEART RHYTHM CLASSIFIER
Title (en)
NON-PROGRAMMABLE AUTOMATED HEART RHYTHM CLASSIFIER
Title (de)
AUTOMATISCHES HERZRYTHMUS KLASSIERGERÄT OHNE PROGRAMMIERERMÖGLICHKEIT
Title (fr)
CLASSIFICATEUR AUTOMATISE NON PROGRAMMABLE DE RYTHME CARDIAQUE
Publication
Application
Priority
- US 9825509 W 19981202
- US 98236297 A 19971202
Abstract (en)
[origin: WO9927850A2] A non-programmable automated heart rhythm classifier that may be used alone or in conjunction with a therapy system for delivering shock treatment or therapeutic drugs to a patient, a monitoring or recording system, a paging or alarm system, or other rhythm classifying device. The non-programmable heart rhythm classifier is used to determine whether a patient's heart rhythm is normal, monomorphic tachycardia or polymorphic tachycardia from extracted features of the cardiac signal of a patient's heart. The extracted features are cycle length and regularity, and preferably with the addition of morphology. Prior to feature extraction, the cardiac electrical signal is conditioned with a signal conditioning system. The classifier may comprise a trained neural network or a trained discriminant function, which has been previously trained by a known set of classified heart rhythm data. Morphology can be estimated by kurtosis or from the probability density function. Regularity can be determined from approximate entropy, information dimension, correlation dimension or from Lyapunov's exponents of the patient's cardiac electrical signal. In yet another embodiment of the invention, adaptive sampling may be utilized to selectively digitize the cardiac electrical signal before classification occurs.
IPC 1-7
IPC 8 full level
A61B 5/0464 (2006.01); A61B 5/363 (2021.01); G06F 17/00 (2006.01); A61B 5/0428 (2006.01); A61B 5/308 (2021.01)
CPC (source: EP US)
A61B 5/308 (2021.01 - US); A61B 5/363 (2021.01 - EP US); A61B 5/7267 (2013.01 - EP US); A61B 5/30 (2021.01 - EP); G16H 50/70 (2017.12 - EP)
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
WO 9927850 A2 19990610; WO 9927850 A3 19990812; CA 2313023 A1 19990610; EP 1035797 A2 20000920; EP 1035797 A4 20021023; US 6192273 B1 20010220
DOCDB simple family (application)
US 9825509 W 19981202; CA 2313023 A 19981202; EP 98961861 A 19981202; US 98236297 A 19971202